package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.DishVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;
    @Override
    @Transactional
    public void savewthDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //将套餐信息插入到套餐表中
        setmealMapper.inseart(setmeal);
        //获取套餐里面的所有菜品，然后将套餐加入到套餐和菜品的逻辑表中
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmeal.getId()));
        setmealDishMapper.insert(setmealDishes);
    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page=setmealMapper.pageQuery(setmealPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    @Transactional
    public void deleteByIds(List<Long> ids) {
        ids.forEach(id->{
            Setmeal setmeal=setmealMapper.getByid(id);
            if (setmeal.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        });
        setmealMapper.delete(ids);

        setmealDishMapper.delete(ids);
    }

    @Override
    public SetmealVO getBySetmealId(Long id) {
        SetmealVO setmealVO = new SetmealVO();
        Setmeal setmeal = setmealMapper.getByid(id);
        BeanUtils.copyProperties(setmeal,setmealVO);

        setmealVO.setSetmealDishes(setmealDishMapper.getdishBysetmealId(id));
        return setmealVO;
    }

    @Override
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal =new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishMapper.deleteById(setmeal.getId());
        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmeal.getId()));
        setmealDishMapper.insert(setmealDishes);
    }

    @Override
    public void startOrstop(int status, Long id) {
        Setmeal setmeal = setmealMapper.getByid(id);
        if (status==StatusConstant.ENABLE){
            Long setmealId = setmeal.getId();
            List<Dish> dishList=dishMapper.getBySetmealId(setmealId);
            if (dishList!=null&&dishList.size()>0){
                dishList.forEach(dish -> {
                    Integer dishStatus = dish.getStatus();
                    if (dishStatus==StatusConstant.DISABLE){
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }

        }
            Setmeal setmeal1 = Setmeal.builder()
                    .id(id)
                    .status(status)
                    .build();
            setmealMapper.update(setmeal1);

//        if(status == StatusConstant.ENABLE){
//            //select a.* from dish a left join setmeal_dish b on a.id = b.dish_id where b.setmeal_id = ?
//            List<Dish> dishList = dishMapper.getBySetmealId(id);
//            if(dishList != null && dishList.size() > 0){
//                dishList.forEach(dish -> {
//                    if(StatusConstant.DISABLE == dish.getStatus()){
//                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
//                    }
//                });
//            }
//        }
//
//        Setmeal setmeal = Setmeal.builder()
//                .id(id)
//                .status(status)
//                .build();
//        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
